Core.



n.11. PROPPITT. y

CORE.

APrLIoATIoN FILED SEPT. 23

Patented Ju1y20, 1909.

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ANDREW, la4 Gamm co., momuwonkmisu, wAlHmGTcN. D`

EDWARD HILL PROFFITT, OF RADFORD,VIRGINIA.

GORE.`

Specification of Letters Patent.`

Patented July 20, 1909.

Application ledSeptember 23, 1908. Serial No. 454,408.

To all whom it may concern:`

Be it known `that l, EDWARD H. PROFFITT, a citizen of the United States,residing at Radford, in the county of Montgomery and State of Virginia,have invented a new and useful Core, of which the following is aspeciiication.

The present inventionrelates `to cores for pipes and tubular structuresof an analogous nature, and more particularlythoseA` employed in themanufacture of tees, crosses, and the like, and the primaryobject is toprovide a core made of sections that can be separately prepared forcasting purposes and afterward joined, said core being very simple inconstruction and cheap both to manufac-` ture anduse.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, whereinz- Figure 1 is a longitudinal sectionalview of a core ready for use. Fig. 2 is an end. elevation illustratingthe manner of preparing the main body; Fig. 3 is a sectionalview showingthe manner of forming one of the lateral or branch sections. j Fig. 4 isa detail longitudinal sectional view of` a modified form of the core.

Similar reference numerals designate cor-` responding parts in all theiigures of thc drawings.

In the embodiment illustrated, a main body 5 is employed that isltubularin form,

. and has a smooth unobstructed exterior face.

In the ends of said tubular `body `are fitted spiders 6, from which.projectcentrally disposed gudgeons 7 and 8, the latter having an angularend 9. The said body is furthormore provided in its opposite sides withLin.-`

wardly extending `tapered sockets 10 `having inner end walls 11 providedwith oblong openings 12.

One or more branch or lateral sections are employed7 and each comprisesa tubular body 13 having an external smooth face and provided at itsends with spiders 14 and .15. One of the ends of the body 13 conforms tothe curvature ofthe main body 5when coated, and the spider 14 in; thisend isprovided with a tapered central projection 1,6 that is adapted tosnugly iit into eitherof the sockets 10. provided with` a` projectingtubular hub `.or gudgeon 17. A holding bolt 18 passes centrally throughthe hub 17 and projection 16, and has at its inner end an elongated headThe other spider 15 is preferably 19` which will pass through theopening 12 Awhen alined therewith, but can be placed transversely ofsaid opening, as illustrated in Fig. 1. The outer end` of the` bolt 18is threaded, and has a nut 2O thereon, which preferably bears against asuitable washer 21.

The manner of preparing a core for use is substantially as follows: `Thesections 5 and 13 are separated andthe main body is rotatably supportedon a suitable frame, as 22 `in Fig.` 2. Said body is then rotated, and alayer of hay rope is wrapped thereupon,

j after which a coating of loam is applied to `the rop`e,.andis properlyfinished off by `means of a core board or striker 23. In like manner,the section 13 can be rotatably mounted by means ofthe gudgeons orprojections 16 and 1.7, anda layer of ro e applied thereto, "after whicha coatingo' loam can alsobe applied. Preferably, however, the loam isapplied by the means disclosed in Fig.` A former 24k is provided havinga curvature conforming to the curve of the coated body. This former alsohas a socket 25 to receive the projection 16 and the bolt 18 is engagedin the lower end wall of the socket. j A core boX 26 is then placedabout the body 13 and the intervening space is filled withthe loam. Whenthetwo seotions have been completed, they are secured together, asillustrated in Fig. 1 by means of the bolt 18, the head of which ispassed through the opening 12 and turned, after which the nut 2() istightened. By tighten ing the nut 20, the two sections of theseparately-finished core are drawn tightly together so that the jointbetween the loam coating of the two sections will be tightly closed.Since the former 24`is of thesame diameter as the coated main section ofthe core, the inner end of they branch section of the core will providea tight joint with the body section of the core when the bolt 18 isdrawn tight. This is an important feature of the presentinvention, sincethe resulting casting will be formed without an internal flange at thejuncture between the main body and branch. There are a number of decidedadvantages for this structure. 1n the first place, by having the `partsso that they can be separately coated,` each can be rotatably Vmounted,and the application of the coating by this method is much cheaper thanwith the core box. At best, however, only the branches need be coatedwith such boxes.

means for holding the projection in the said if a tee is to be formed,only one branch is employed, as illustrated in Fig. 1, in which case,the socket is filled with a plug, as 10a. Of course if a cross is to bemanufactured, the plug is removed and sections are applied to oppositesides of the main body.

The means for securing theV sections to the main body may be modified.For instance, in Fig.. 4, said body is designated by the referencenumeral 5a, and has an inwardlyY tapered socket 6a. The lateral orbranch section 7 a is provided with a spider 8 carrying a taperedprojection 9aL that snugly fits within the socket. The side walls of thesocket 'and the projection are provided with alined openings 11, throughwhich can be passed a holding pin 12 a, the outer end thereof projectingfrom the end of the barrel, so that it can be readily' withdrawn.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art, without further description, and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction, may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A core comprising a main body provided with a coating of corematerial, said coating having a smooth unobstructed outer surface, saidbody being provided between its ends with an inset socket located whollywithin the body, a lateral branch section separable from the body andhaving a coating of core material applied when'detached from the bodyand having one end shaped to conform with the curvature of the coatedmain body, the said end of the branch section being provided with aprojection to engage in the socket of the main body, and

socket and at the same time clamp the separately-coated main body andbranch section together. V

2. A core comprising a main body having gudgeons at its ends whereby itmay be rotatably mounted, said body having sockets at different points,a lateral or branch section having a projection that engages inV one ofthe sockets, means for securing the projection in said socket, and aremovable plug filling the other socket and having its outer end flushwith the external surface of the body.

3. The combination with a tubular body having a smooth peripheral faceand spiders at its ends, said spiders being provided with gudgeons, thebody furthermore having opposite inset sockets, of a branch or lateralsection having an end conforming toA the curvature of the body, said endhaving a vspider Vprovided with a central projection that detachablyengages in the socket, and means for holding the section on the bodywith the projection in the socket.

4. The combination with a tubular body having spiders at its ends andgudgeons proj jecting from the spiders, said body having a socket in oneside, of a lateral or branch section having one end shaped to conform tothe exterior of the body and provided with spiders in its ends, aprojection carried by one of the spiders and detachably engaging in thesocket, and a holding rod extending longitudinally through the lateralor branch section and through the spiders thereof, said rod having ahead that detachably engages the inner end wall of the socket.

5. A core comprising separately-formed main and branch sections and eachconsisting of. a body having a coating of core material adheringthereto,the end'of one of the sections being shaped to conform with the outersurface of the coating of the other section, and means for clamping thesections together with the said end of the branch section abutting andin contact with the coating of the main section to form a unitary corebefore placing in a mold.

6. A core comprising separately-formed main and branch sections, saidmain section consisting of a body provided with a socket and having acoating of core material, said coating being open at the socket, saidbranch section consisting of a body having a coating of core material,one end of the coating being shaped to conform with the curvature of thecoating of the main section, a roj ecting member adapted to fit in thesoc et, and means for securing the member in the socket and for clampingthe separatelyformed sections together to tightly close the jointbetween the coatings of the two sections.

7. A core comprising a body constituting a form, a coating of corematerial applied to the outer surface thereof, means on the body vforengagement with a branch core, in combination with a branch coreconsisting of a body having one end shaped to conform with the exteriorof the first-mentioned body after the latter is coated, a coating on thebranch core body applied while the latter is unattached, the coating` onthe branch core being flush with the said end. to fit the coated body ofthe Yfirst-mentioned core, means on the branch core body for engagementwith the first-mentioned means, and a device for detachably fasteningthe separately-coated core bodies together.

8. A core comprising separately-formed main and branch sections, saidmain section comprising a body having means for rotatably supporting thebody on its aXis, a coating of core material covering the outer surfaceof the body, and means for binding the coating to the body; said branchsection consisting of a body having one end shaped to conformsubstantially with the curvature of the main section," a coating of corematerial covering the body and having one end given the same curvatureas the linished main section, and a binding means for holding thecoating `on the body of the branch section; and a device for `securingthe separatelyformed sections together with the said curved end of thebranch section snugly fitting the coating of the main section.

9. A branch core section comprisinga tu bular body having an externalsmooth face and provided at its ends With spiders, one of the ends ofthe branch core section conforming to the curvature of the main coresection after the latter iscoated, the spider at said end `of the branchcore section having a tapered central projection, and a bolt passedcentrally through the said projection and branch core section andextended from both ends thereof.

In testimony that I claim the foregoing as my own, I have hereto affixedmysignature in the presence of two Witnesses.

` EDWARD IIILL PROFFITT. Witnesses:

G. H. SNIDER,

Gr. H. FUDGE.

